Table Of Contents - LG MG810c Service Manual

1. Introduction ........................................ 5
1.1 Purpose ...................................................... 5
1.2 Regulatory Information ............................... 5
2. General Performance ......................... 7
2.1 H/W Features.............................................. 7
2.2 Technical Specification ............................... 8
2.3 S/W Features.............................................12
2.4 H/W Features.............................................10
2.5 S/W Features.............................................12
3. H/W Circuit Description ................... 13
3.1 RF Transceiver General Description ........ 13
3.2 Receiver Part ............................................ 13
3.2.1. RF Front End...........................................14
3.2.2. Low IF .....................................................15
3.2.3. Demodulator and Baseband
Processing ..............................................15
3.3 Synthesizer Part ....................................... 15
3.3.1. VCTCXO .................................................16
3.4 Transmitter Part .........................................16
3.4.1. IF Modulator ............................................17
3.4.2. OPLL .......................................................17
3.4.3. Power Ampifier Module ...........................17
3.4.4. Power Supplies and Control Signals.......18
3.5 Digital Baseband....................................... 19
3.6 Analog Baseband ......................................33
3.7 LCD & Camera Interface ...........................37
3.8 Bluetooth Interface.....................................39
3.8.1. Bluetooth circuit Description....................40
4. TROUBLE SHOOTING...................... 41
4.1 Baseband Part Troubleshooting ............... 41
4.2 RF Part Troubleshooting........................... 59
4.3 Bluetooth Trouble ..................................... 74

Table of Contents

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5. DOWNLOAD...................................... 77
5.1 H/W Tool Setup ........................................ 77
5.2 Install & Directory structure........................78
5.3 Configuration setting..................................79
5.4 Download sequence ..................................82
6. Block Diagram .................................. 83
7. CIRCUIT DIAGRAM........................... 85
8. PCB LAYOUT .................................... 95
..............................................
9. Calibration
9.1 H/W Tool Setup .......................................101
9.2 Install & Directory structure......................104
9.3 Others Directory structure of CM_GSM...105
9.4 Cal. Procedure.........................................106
9.5 Cal. sequence..........................................107
10. ENGINEERING MODE
11. STANDALONE TEST .....................109
11.1 Setting Method.......................................109
11.1.1 COM Port .............................................109
11.1.2 Tx Test .................................................109
11.1.3 Rx Test.................................................109
12. EXPLODED VIEW & REPLACEMENT
PART LIST ..................................... 111
12.1 EXPLODED VIEW ................................ 111
12.2 Replacement Parts
<Mechanic component> ....................... 113
<Main component> ............................... 116
12.3 Accessory ............................................. 131
101
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108